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发明名称
RAILWAY CAR COUPLER
摘要
申请公布号
CA444079(A)
申请公布日期
1947.09.09
申请号
CAD444079
申请日期
申请人
NATIONAL MALLEABLE AND STEEL CASTINGS COMPANY
发明人
WILLIAM JOSEPH METZGER
分类号
主分类号
代理机构
代理人
主权项
地址
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